The purpose of this study is to evaluate the efficacy of verum acupuncture (VA) for the prevention of migraine without aura compared to non-penetrating sham acupuncture (SA) and usual care alone (UC). This study also aims to determine whether the intensity of deqi sensations and psychosocial factors (including patient expectations, patient personality traits, patient-doctor relationship, traditional Chinese medicine constitution, depression, anxiety, sleep quality, etc.) are associated with clinical outcomes.